Generates a colormap of shades of blue.
COOL(len)
len |
- |
Optional. An integer, the colormap length. Defaults to the length of the current colormap. |
A table of RGB triples suitable for the SETCOLORMAP function.
clen = length(getcolormap());
density(ravel(rep(0..(clen-1), 32), clen)');cool
creates a table of 32 x N (where N == colormap length) RBG values and displays the resulting colors. The resulting image is a vertical plot of colors ranging from aqua (lowest) to violet (highest).
W1: cool;showcmap();
W2: copper;showcmap();
W3: hot;showcmap()
W4: pink;showcmap();
W1, W2, W3 and W4 display 32x256 sequential, dark to light colormaps where 256 is the colormap length. The colormaps are not perceptually uniform.
cool by itself sets the colormap and shading.
a = cool or setcolormap(cool) returns the RGB values. In this case, use SETSHADING to make the new colormap take effect on an existing density or 2D plot.
The COOL colormap produces a smooth gradient that runs from cyan to magenta, giving it a synthetic, pastel aesthetic.